The BMW M3 GTR (E46) was a road-legal version of the M3 GTR from BMW produced to allow the V8-powered M3 GTR race car to compete in the 2002 American Le Mans Series season. It had a limited production run of 10 units and was engineered as a near perfect replication of the racing M3 GTR. The 4 litre V8 engine is similar to the V8 engine used in the racing car although it has been adapted and altered to meet emission standards as well as noise regulations.